Bender EDS440-L - Schematic Diagram EDS System

FunctionFunction
EDS44x_D00201_07_M_XXDE/06.2020
13
3.3 Schematic diagram EDS system
X1
IT-System
O
K
R(an)
4 0 kΩ/10kΩ
O
K
>20
MΩ>20
MΩ
PGH ON
A1/+ A2/-
L1/+
L3/-
L2
KE E
I L I n
EDS440
ISOSCAN®
-1
>3s ADDR.
RESET
+1
+10
TEST
CHANNELS / ADDR.
12
11109
87
345621
+10 +20 +40
Addr. Mode
n
∆
I
ALARM
L
∆
I
ALARM
SERVICE
COM/ADDR.
ON
ll
A1 A2
U
S
L1
L2
PE
R
F
I
L
I
L
EDS44x
U
n
U
S
iso685-D-P
Load with an
insulation fault
Legend
EDS44x Insulation fault locator
iso685-D-P Insulation monitoring device with an integrated locating current injector
U
n
Voltage source IT system
U
s
Supply voltage
W Measuring current transformers
I
L
Locating current
R
F
Insulation fault downstream of the measuring current transformer
PE Protective earth conductor or equipotential bonding conductor
BS bus BS bus for device communication